title: Determination of 5-fluorouracil and pyrimidine bases in plasma by gas chromatography-chemical ionization-mass fragmentography.
mesh_terms: D003596:Cytosine / Q000097:blood; D005472:Fluorouracil / Q000097:blood*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D006801:Humans; D007477:Ions; D011743:Pyrimidines / Q000097:blood*; D005641:Tegafur / Q000031:analogs & derivatives / Q000378:metabolism; D013941:Thymine / Q000097:blood; D014498:Uracil / Q000097:blood
chemical_list: D007477:Ions; D011743:Pyrimidines; D005641:Tegafur; D014498:Uracil; C016882:FD 1; D003596:Cytosine; D013941:Thymine; D005472:Fluorouracil